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Gravitational Wave Decay into Dark Energy
Paolo Creminelli, Matthew Lewandowski, Giovanni Tambalo +1
We study the decay of gravitational waves into dark energy fluctuations , through the processes and , made possible by the spontaneous breaking of Lorentz inv…
Mimetic gravity as DHOST theories
David Langlois, Michele Mancarella, Karim Noui +1
We show that theories of mimetic gravity can be viewed as degenerate higher-order scalar-tensor (DHOST) theories that admit an extra local (gauge) symmetry in addition to the usual…
Towards Precision Constraints on Gravity with the Effective Field Theory of Large-Scale Structure
Benjamin Bose, Kazuya Koyama, Matthew Lewandowski +2
We compare analytical computations with numerical simulations for dark-matter clustering, in general relativity and in the normal branch of DGP gravity (nDGP). Our analytical frame…